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Sav [38]
3 years ago
15

HELP FOR NUMBER 16 THROUGH 19 QUICKLY PLEASE

Mathematics
2 answers:
Ymorist [56]3 years ago
8 0
16)  9y+2r     If she bought 1 dog toy and 2 treats: 9(1)+2(2)= 13
17)  5n-3n= 2n
        17-2+7= 22   Combine like terms
         2n+22           Write out expression
        2(8)+22= 38   Plug in 8.
        Answer: 2n+22; 38
18)  5h^3   h represents the # of weeks; Find # of tickets sold in 3 weeks:h=3
       5(3)^3    plug in 3
       5(27)      PEMDAS; Exponents first; 3*3*3= 27
       Answer: 135         
19)  It is true
       If d=2, 5(2)*5(2)*5(2)= (5*2)^3
       10*10*10=(10)^3
        1,000=1,000

Hunter-Best [27]3 years ago
8 0
16) 9t+2x
T standing for cost Per toy
X standing for cost per treat
Be sure to include this to get full credit.
17) 5(8)+17-3(8)-2+7
40+17-24-2+7
57-24+5
33+5=38
Please include all work to receive full credit
18) 5(3)^3
3,375
Mrs.Cuiman has sold 3,375 tickets in 3 weeks
Please include the sentence above to receive full credit.
19) yes,this statement is true because an exponent is when a number and/or variable is multiplied more than once by itself.In this case the exponent is 3 in which 5d is multiplied by itself 3 times.

Hope this helped
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5 0
3 years ago
Brainliest for you if you answer!
eduard

<u>To find the constant of proportionality:</u>

  ⇒ must define constant of proportionality

    ⇒ <em>Constant of Proportionality:  ratio of two proportional values at a </em>

       constant value

       ⇒ (in this case) two proportional values are x and y

<u>The ratio between x and y is equal to</u>

  \frac{y}{x} =\frac{66}{1.2}=55

<u>Answer:</u> <u>55</u> or <u>Choice 1</u>

<u></u>

Hope that helps!

7 0
2 years ago
Brian has 40000 to invest in a mix of corporate and municipal bonds. The corporate bond pays 10% simple annual interest and the
jonny [76]

Answer:

Sum of money invested in corporate bonds = 30,000

Step-by-step explanation:

Total sum = 40,000

The rate of interest for corporate bonds = 10 % = 0.1

The rate of interest for municipal bonds = 6 % = 0.06

Total interest = 3600

Let sum of money invested in corporate bonds = x

The sum of money invested in municipal bonds = 40000 - x

x × 0.1 × 1 + (40000 - x) × 0.06 × 1 = 3600

(0.1- 0.06)x + 2400 = 3600

0.04 x = 1200

x = 30,000

Since x =  sum of money invested in corporate bonds

So  sum of money invested in corporate bonds = 30000

4 0
3 years ago
The price of a cup of coffee has dropped to $2.10 today. Yesterday's price was $2.35 . Find the percentage decrease. Round your
Lady bird [3.3K]
Percent increase/decrease is: (Change/original amount)x100 (.25/2.35)x100= 10.6%
6 0
3 years ago
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